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Re: Topband: Silver solder

To: <>
Subject: Re: Topband: Silver solder
From: "Paul Christensen" <>
Date: Wed, 31 Dec 2014 09:03:59 -0500
List-post: <">>
"The only issue is that solder requires a bit more heat
then the leaded solder."

To get adequate heat when using silver-solder bars, one option is to use a small acetylene cylinder tank with a single line torch kit. The typical air/acetylene temperature is about 1000 degrees F higher than propane/butane. That's often enough to reach the bar's melting point when the connection is heat-sink limited (e.g., bonding wide copper ground straps).

I once tried oxyacetylene (a pure oxygen + acetylene mixture) and had a disastrous result. The torch temperature rises rapidly with even a small volume of mixed oxygen. Good for some welding applications, but not silver-soldering.

Paul, W9AC

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